Uglovsky District (Russian: Угло́вский райо́н) is an administrative and municipal district (raion), one of the fifty-nine in Altai Krai, Russia. It is located in the southwest of the krai. The area of the district is 4,844 square kilometers (1,870 sq mi). Its administrative center is the rural locality (a selo) of Uglovskoye. As of the 2010 Census, the total population of the district was 13,888, with the population of Uglovskoye accounting for 31.5% of that number.